TY - JOUR AU - Chajda, Ivan TI - A groupoid characterization of Boolean algebras JO - Discussiones Mathematicae. General Algebra and Applications PY - 2004 SP - 177 EP - 184 VL - 24 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DMGAA_2004_24_2_a1/ LA - en ID - DMGAA_2004_24_2_a1 ER -